Electric switch.



F. P'. GATES. ELECTRIC SWITCH.'

I I v APPLICATION FILED SEPT. 4, I9I5. 1,1%81 1. l

/CFEDCI I 1 361, ne :mm/m1,;- Gangsimproved sheet metal, is oiset at its upper en UNITED sTATEs Parana einem, i

FRDERIC P. GATES, OF HARTFORD, CONNECTICUT, ASSIGrNOB TOV THEQARRGW ELEC- v TRIO COMPANY, 0F HARTFORD, CONNECTICUT, A CORPORATION 0F CONNECTICUT.

Q ELECTRIC SWITCH.

Specification of Letters latent.

Application filed September 4, 1915. Serial No. 48,971.

` To all whom t may concern 'citizen of the United States of America, and

residing at Hartford, in the .county of Hartford and State of Connecticut, have invented acertain new and useful Improvement in Fillegctric Switches, of which the following is a' specification. v

dMy invention relates to electric switches and particularly to what are commonly referred to as door switches, the object. of my invention being` to provide mechanism of this type. In the accompanying drawing, a'longitudinal section through a switch in which my invention is embodied lin o ne form; Fig. 2 is a plan-of this switch; Fig. 3 is a side elevation of the switch mechanism with the parts in another position; and Fig. 4 Ais a detached perspective of the switch mechanism elements.

Referring to the drawings, show-n is mounted in a cup-shaped insulating body having at one end an interior barrier 11 between the depressedv ledges 12 on which the wire terminals 13 are mounted.

Wire holes `14 lead from below to' the ledges 12, and the switch terminals 15 have offset ends which are clamped beneath the bases of the're'spective wire terminals by the securing screws 16.

The switch mechanism is carried by a stamped sheet metal frame 17,1having its upper end oiset and perforated at 18 to form a guide for the push plug 19 and tapped at 20 to receive a securing screw passing `through the usual face plate (not shown). Lugs21loiiset from the bottom of the frame are tapped at 22 to receive the securing screws 23 passing through the bottom of the insulating base 1'0. letween these lugs liesa downward extension 24 of the 4frame, slotted at 25. The switch actuating slide or push plate 26, also stamped vfrom d to afford an attaching seat for the push plug 19 while its lower end has a tongue 2 offset in the opposite direction and provided with a head 28'. ,In the assembled position of the parts the plug 19 vextends through the hole 18- in the frame, while'the tongue 27 works in the slot with the'head 28 spanning the slot on the opposite side yof the frame and working in the well 29 formed 1iithe side and base of the body 10 to receive this head a simplilied andy Figure 1 is pin the switchhere and the downward extension 24 of the frame.

Patented May 16, 1916..

From one margin of the push plate 26`eX tends the lug 30 to engage switch 3; spring 31, while from the opposite margini, at a lower point, extends in the same direction the escapement lug 32.

The switch` bar 33, also struck from sheet metal, 1s pivotedv at 34 on the vpin 35 fast the ends of the with the standard of the frame 17, and carries at one end the insulated contact piece;i 36 which spans the switch terminals 15 when' the switch is closed. A lug 37 struck at right angles from the .switch bar rlies between, the ends ofthe switch spring 31 coiled on the and spacing the switch bar from thek ush plate 26 in the assembled mechanism'.` A detent lug 38, also integral with the switch bar, butv bent at right angles thereto, cooperates with the escapement lug 32 on the push plate. The bent end 39 of the switch bar'forms a stop lug working between the shoulders 40 formed in one margin of the upright of, the frame aml limits the extent.

of oscillation of the switch bar under the in-v. spring 31. A heavy luence of the switch return spring 41, mounted on the pin 42 carried by the frame, is normally under tension, one end 43 engaging the bent upper end of the push plate brings the escapement lug 32 into the path of the detent 38 on the switch bar and the latter is thus held stationary while the lug 32 slides past detent 38 and the switch spring 31 is tensioiied by the separation of the lugs 30 and 37. On

the escape of lug 38 beneath the lower edg'e 4of lug 32, the switch bar, now released, is

the switch spring 31 through swung up by shoulders 40 and enthe arc limited 'by the gagesbetween the switch terminals 15 thus -completing the circuit.

l A further outward movement of the push plate for a slight distance again slightly tensions the spring 31 in same direction and thus holds the switch bar, firmly in the on position. When the door is again closed, the` movement is reversed, the detent lug 38 now bearingv against the opposite side of the escapement lug 32 and the return spring 41 being again fullyv tensionedf y' y 0f course the position of the switchterminal 15 may bereversed to make contact with the switch piece when the push plug 19 is in instead of out?, as shown. full carrying yoke, instead of the ears 45 `may be secured by the screws 46, if desire and in such case the screw taking into the tap 20 of the trarne would pass through the yoke instead of therface plate as above described.

Various other modifications of the construction will readily suggest themselves to those skilled in the art without 'departing from what I claim as my invention.

I claimz-e y w l. An electric switch comprisin a slotted sheet metal 4traine' having o 'set guide lug, a piish plate having a push plug passswitch bar, a switch, spring for operatlngr the saine, an escapement yengagement loetween saidlpush plate and switch bar, and a return spring lconstantl said push plate` in one direction. f

2. In' an 'electric yswitch of the type described,'a sheet metal frame having an upright, supporting' lugs offset from the lower end thereof,' a' slotted downward extension between said lugs, a push plate sliding on one face of said standard andfhaving at lits lower end a tongue passing through' said slotted extension and engaging said .standardon its opposite face, for the purpose described. 1"-

3. Inanelectric'switch ofthe type described, a sheet metal frame 'having a standard with offset iangeat'its upper end, Va

pair of supporting lugs offset from its lower end, and aslotted downward extensiontej tween said lugs, apush platesliding on one face of said standard and having at its up per end a member passing throughsaid top {iange of the standard and provided at lits y tending to move ing marginal stop shoulderspa push plate sliding on one face of said standard, a mar lower end with a tongue assing through said-"slotted extension f an engaging said standard on its opposite face, for the purpose described.

c) In an electric switch of the type {le-- scribed, a sheet metal push plate having at one end a push plug and at the opposite end an offset guide tongue, together with a lug extending from one margin of the push plate and at right angles theretoffor engaging a switch spring and an escapement lug extending in the same direction' from the opposite margin of the plate td'coperate with the detent of a switchleven. f 5. .Inan electric'switch of thetype scribed,- a sheet metal frame plate-compris# ing a standard having a pair of supporting lugs oii'set from its lower end and 4a slotted, downward extensionV between the same to form a guide for af push plate and marginal shoulders in the standard to form stops for liser'ibeid, a standard oiiset at its uppers' end,

a push plate 'sliding oh one face of said standard and having an odset atits upper. end, a coiled return sprin carried by said standard and having one'ieg engaged with said offsetyend of the standard and its other leg engaged under tension beneath the 05- set upper end 'of the push plate.

7. In an electric switch, a standard hav ginal' lugvon said push plate and extending at an angle thereto to form an escapement lug, a pivoted switch lever having'e man ginal lug angled with relation thereto 'to form a detent'coperating with the esca ement lug' on the push plate and an o set end forming a stop lug coperating with the marginal stop shoulders on the standard, together with a switch spring and an operarsv tive engagement between the sameand the push plate and switch lever. v

In testimony whereof I have signed my name to this speciiication, in the presence Qi. two subscribing witnesses. i ""1 FREDERIC P. GATES. Witnesses: f c

B. Henman, I-I. M. SADERS. 

